from random import randint
def getRandomCharacter(ch1,ch2):
    return chr(randint(ord(ch1),ord(ch2)))

def getRandomLowerCaseLetter():
    return getRandomCharacter('a','z')

def getRandomUpperCaseLetter():
    return getRandomCharacter("A","Z")

def getRandomDigitCharacter():
    return getRandomCharacter("0","9")

def getRandomASCIIChacter():
    return chr(randint(0,127))
